HEPA & ULPA Air Filters: Precision Particle Removal for Global Cleanroom Standards
HEPA filter with partitions
Aluminum foil separators, ideal for medium airflow applications.
HEPA filter without partition
Folded design, low resistance, perfect for Fan Filter Units (FFU).
High-flow high-efficiency filter
Single-unit airflow: 2000–5000 m³/h, designed for large cleanrooms.
High-Efficiency Particulate Air Filter ULPA
≥99.9995% efficiency, meets ISO Class 3 cleanroom requirements.
High-Efficiency Particulate Air (HEPA) and Ultra-Low Penetration Air (ULPA) filters remove airborne particles as small as 0.3μm with efficiency ≥99.97% (HEPA) or ≥99.9995% (ULPA). They are critical for cleanroom HVAC systems, paint spray booths, and pharmaceutical manufacturing globally.
Manufactured with ultra-fine glass fiber or PTFE media, aluminum foil separators, and silicone sealing, these filters are installed at the final stage of air filtration in FFU (Fan Filter Units) or high-efficiency supply outlets.
EN1822:2009 – European Standard for HEPA & ULPA Filters
| Filter Class | Overall Efficiency (%) | Local Efficiency (%) |
|---|---|---|
| E12 | ≥ 99.5 | --- |
| H13 | ≥ 99.95 | ≥ 99.75 |
| H14 | ≥ 99.995 | ≥ 99.975 |
| U15 | ≥ 99.9995 | ≥ 99.9975 |
| U16 | ≥ 99.99995 | ≥ 99.99975 |
Source: EN1822:2009 – High Efficiency Particulate Air (HEPA) and Ultra Low Penetration Air (ULPA) Filters
Practical Applications (Industry Case Studies)
1. Semiconductor Manufacturing
Used in ISO Class 5 cleanrooms to prevent microchip contamination. KH Filter H14 filters ensure ≥99.995% particle removal.
2. Pharmaceutical Production
Compliant with GMP standards, HEPA filters prevent microbial contamination in sterile manufacturing areas.
3. Paint Spray Booths
Remove overspray particles and VOCs. KH Filter offers PTFE-based ULPA filters for chemical resistance.
Global Certifications We Meet
EN1822:2009
European HEPA/ULPA Standard
ANSI/ASHRAE 52.2
North American Filter Standard
UL 94 V-0
Fire Safety Rating
FAQs
HEPA filters remove ≥99.97% of particles ≥0.3μm. ULPA filters achieve ≥99.9995% efficiency for particles ≥0.1μm. ULPA is used in ISO Class 3 cleanrooms.
For Europe: EN1822:2009. For North America: ASHRAE 52.2. KH Filter products comply with all three standards.
Yes, but only with PTFE media (e.g., KH Filter U15 ULPA). Standard HEPA filters may degrade in solvent exposure.